The detection of malignant neoplasia of the gastrointestinal tract by the use of radioactive phosphorus (P32) and a miniature Geiger tube.
D004938:Esophageal Neoplasms / Q000175:diagnosis*; D006801:Humans; D008722:Methods; D010759:Phosphorus Isotopes; D011874:Radiometry; D012004:Rectal Neoplasms / Q000175:diagnosis*; D013274:Stomach Neoplasms / Q000175:diagnosis*
D010759:Phosphorus Isotopes